Question

An operon is:

• A. Regulatory molecule that turns genes on and off
• B. Cluster of regulatory sequences controlling transcription of protein coding genes.
• C. Cluster of genes that are co-ordinately regulated
• D. Promoter, an operator, and a group of linked structural genes

Hint:

Focus on the components of an operon when studying genetic regulation in prokaryotes, especially the promoter, operator, and genes involved.

Answer 1

The Correct Option is D

An operon consists of a promoter, an operator, and a group of structural genes that are transcribed together. The genes within an operon are regulated as a unit, which is essential for the coordinated expression of related genes in bacteria.